Author: Uri Blass
Date: 15:06:40 02/26/03
Go up one level in this thread
On February 26, 2003 at 17:51:41, John Wentworth2 wrote: >On February 26, 2003 at 17:42:31, Uri Blass wrote: > >>On February 26, 2003 at 17:32:08, Uri Blass wrote: >> >>>On February 26, 2003 at 16:56:54, John Wentworth2 wrote: >>> >>>>On February 26, 2003 at 16:28:41, James T. Walker wrote: >>>> >>>>>Just for fun I tried the Mephisto Risc (1MB) dedicated machine which was a world >>>>>champion around 1991 against Fritz 8. The Mephisto was playing at 40/2hours >>>>>while Fritz 8 played at G/5min. Some info: The Mephisto searches about 3-4K/nps >>>>>and is currently rated about 2100 on the SSDF list. When new it was considered >>>>>to be rated much higher. Not sure but I think Ed S. was the programmer. Here >>>>>are the 2 games. >>>>> >>>>>[Event "Blitz:5'"] >>>>>[Site "?"] >>>>>[Date "2003.02.26"] >>>>>[Round "1"] >>>>>[White "Mephisto (40/2hrs)"] >>>>>[Black "Fritz 8"] >>>>>[Result "0-1"] >>>>>[ECO "B63"] >>>>>[PlyCount "92"] >>>>> >>>>>1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 Be7 8. >>>>>O-O-O O-O 9. Nb3 a6 10. h4 a5 11. Bxf6 Bxf6 12. Qxd6 Qxd6 13. Rxd6 a4 14. Na1 >>>>>Be5 15. Rd1 a3 16. Rh3 f5 17. exf5 Rxf5 18. bxa3 Rxf2 19. Kb2 Ra4 20. Nb3 Raf4 >>>>>21. Rh1 Ne7 22. Rd8+ Rf8 23. Rxf8+ Rxf8 24. Bc4 b5 25. Bxb5 Nd5 26. Rh3 Nxc3 >>>>>27. Rxc3 Bb7 28. Nc5 Bxg2 29. Kb3 Bd5+ 30. Rc4 Bd6 31. Nd3 Rf5 32. Nb4 Bxc4+ >>>>>33. Bxc4 Kf7 34. Nc6 Bg3 35. Nd8+ Kf6 36. Nxe6 Bxh4 37. Nd4 Re5 38. Bd3 Bf2 39. >>>>>Nf3 Re7 40. Nd2 Be1 41. Ne4+ Ke5 42. Ng5 h5 43. Nf3+ Kf4 44. Nxe1 Rxe1 45. c4 >>>>>h4 46. Bg6 Resigns 0-1 >>>>> >>>>>[Event "Blitz:5'"] >>>>>[Site "?"] >>>>>[Date "2003.02.26"] >>>>>[Round "2"] >>>>>[White "Fritz 8"] >>>>>[Black "Mephisto (40/2hrs)"] >>>>>[Result "1-0"] >>>>>[ECO "B12"] >>>>>[PlyCount "33"] >>>>> >>>>>1. d4 c6 2. e4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. Be3 Qb6 7. Nc3 Qxb2 8. Nb5 >>>>>Na6 9. dxc5 Nb4 10. O-O Nxc2 11. Qd2 Rc8 12. Nxa7 Rc7 13. Qa5 Rd7 14. Bb5 Nxa1 >>>>>15. Bd4 Qxb5 16. Nxb5 Be7 Resigns 1-0 >>>> >>>> >>>>I wonder over a period of blitz games if the Mephisto would do better. The >>>>reason I say this is because I recently played a 2' blitz match between Crafty >>>>19.01 on a 1.2Ghz PC and Fritz 6 on an old 166Mhz PC. Fritz 6 on the slow >>>>machine won by a large margin, something like 46.5 - 14.5 but when the time >>>>control was longer, Crafty played much better. >>> >>>46.5-14.5 when the hardware difference is so big. >>>Something seems to be wrong. >>> >>>How did you play the match? >>>If you used an autoplayer then it is possible that the autoplayer is broken >>>at this time control. >>> >>>Crafty is not a good blitz engine but I believe that it is not going to lose >>>46.5-14.5 against Fritz6 at any time control if you give it hardware advantage >>>of more than 5-1. >>> >>>Uri >> >>I meant to say not a good blitz engine relative to Fritz and the same is for >>longer time control. >> >>I do not know if relatively crafty is weaker in blitz. >>It may be interesting if people try to find x when >> >>Fritz6(1 minutes) has the same strength as Crafty19.01 (x minutes) >> >>It is possible to try to find it by doing a match of 800 games from the >>positions after 1.a3 a6 1.a3 a5,.... and finding x such that the result is the >>closest to 400-400) >> >>After that people can try to find based on similiar match if >>Fritz6(10 minutes) is weaker or stronger than Crafty(10x minutes). >> >>people can use other programs and they can use Fritz8 and I only suggested >>fritz6 because it was in the discussion. >> >> >>Uri > > >I did use the autoplayer, so maybe it had something to do with that but it >appeared to play normally. I was quite suprised by the result as well. I was >surprised that Fritz 6 on the slow machine would win at all but by such a wide >margin was really shocking to me. Note that I never use the autoplayer but I remember that I read that there may be a problem of a small delay of 2 seconds in getting the moves from the autoplayer(not significant at 120/40 but may be significant at blitz) and the question is if Fritz6 really used 2 minutes per game(for example if fritz6 used more than it when Crafty kept to use only it's time then there is a problem). Uri
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